Also known as velcro sandpaper discs, the hook and loop is a type of sanding disc made for easy attachment and removal to your power tools like an orbital sander, for example. One side has an abrasive material attached to it while the reverse has a hook and loop backing (much like standard Velcro) to attach to your orbital sander or disc sander. As a manufacturer of the hook and loop discs we have the possibility to laminate the abrasive material with different type of hook and loop material. There are many types of thickness and weight, which can influence the final performance of the sanding disc. Ask our experts for further advise.